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staging: xillybus: Remove mmiowb() before wait_event_*() calls 

According to Documentation/memory-barriers.txt, a memory barrier is put
in place by wait_event_*()

Signed-off-by: Eli Billauer <eli.billauer@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eli Billauer 2014-08-16 18:57:56 +03:00 committed by Greg Kroah-Hartman
parent a4102f90e8
commit a5b2e028bb
1 changed files with 0 additions and 3 deletions
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3
drivers/staging/xillybus/xillybus_core.c
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@ -640,7 +640,6 @@ static int xilly_obtain_idt(struct xilly_endpoint *endpoint)
iowrite32(1 |
(3 << 24), /* Opcode 3 for channel 0 = Send IDT */
endpoint->registers + fpga_buf_ctrl_reg);
mmiowb(); /* Just to appear safe */
wait_event_interruptible_timeout(channel->wr_wait,
(!channel->wr_sleepy),
@ -1986,7 +1985,6 @@ static int xilly_quiesce(struct xilly_endpoint *endpoint)
wmb(); /* Make sure idtlen is set before sending command */
iowrite32((u32) (endpoint->dma_using_dac & 0x0001),
endpoint->registers + fpga_dma_control_reg);
mmiowb();
wait_event_interruptible_timeout(endpoint->ep_wait,
(endpoint->idtlen >= 0),
@ -2055,7 +2053,6 @@ int xillybus_endpoint_discovery(struct xilly_endpoint *endpoint)
*/
iowrite32((u32) (endpoint->dma_using_dac & 0x0001),
endpoint->registers + fpga_dma_control_reg);
mmiowb();
wait_event_interruptible_timeout(endpoint->ep_wait,
(endpoint->idtlen >= 0),